First question: 800J
Second question: 20.4m
Jupiter i hope it is right answer
Barium cation has +2 charge and oxide anion has −2 charge
Answer:
D
Explanation:
reactants have higher potential energy and energy is absorbed
Answer:
0.181
Explanation:
We can convert the 0.5 rps into standard angular velocity unit rad/s knowing that each revolution is 2π:
ω = 0.5 rps = 0.5*2π = 3.14 rad/s
From here we can calculate the centripetal acceleration
Using Newton 2nd law we can calculate the centripetal force that pressing on the rider, as well as the reactive normal force:
Also the friction force and friction acceleration
For the rider to not slide down, friction acceleration must win over gravitational acceleration g = 9.81 m/s2: